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Check if tickets need to be reindexed when the server starts. This is the
case if no ticket index exists. In that case the ticket index is built.
This is done during the start of the `ITicketService`.
For this the interface of `ITicketService` needed to change. The `start`
method was defined abstract and the specific ticket services had to
implement it. None does any real starting stuff in it.
The `start` method is now final. It calls a new abstract method `onStart`
which the specific ticket services need to implement. In the existing
implementations I just changed `start` to `onStart`.
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In order to be able to update the index definition, the ticket index
is assigned a version number, 2. This way the definiton can be updated
and compatability with existing index files can be checked.
The actual index is stored in a directory of name `indexVersion_codecVersion`.
This wayit is veriy easy to check if an index of a certain version exists on the
filesystem. It allows to have multiple indexes of different versions present,
so that a downgrade of the software is possible without having to reindex
again. Of coure, this is only possible if no new tickets were created since these
would be missing in the old index.
A new class `LuceneIndexStore` is introduced, which abstracts away the versioned
index directory. The idea is, that this provides one place to keep the Lucene
codec version and to allow to code compatibility rules into this class, so that
older indices can still be used if they are compatible.
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In order to support sorting, Lucene 5 needs DocValue fields in an index.
So in order to make the ticket index work, i.e. show any tickets on the
tickets page, the ticket index needs to be changed, adding a DocValues
field.
The DocValuesFields are implemented for the current index, which does not
use multiple values for a field. Should at any time in the future an
existing numeric field get multiple values stored in a document, then
the index needs to know that and use SortedNumeric DocValues and SortFields
instead.
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Also replace deprecated `search` method with the one without a filter
argument, since the filter isn't used anyhow.
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This reverts commit 55c385e96e6594ec1ac3b5cd41ccd2df6048b696, reversing
changes made to 61bb29d492ca9c34471ec0a119d1445ccde086e9.
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+ Severity indicated via new character indicator and color of ticket icon on ticket list
+ Priority indicated via new priority icon and color on ticket list
+ Indexed as integers to provide sorting and maintain language neutral
index
+ Colours and indicator text controlled through CSS classes priority-<x> & severity-<x>
+ UITicketTest created to generate tickets of all types to ease debugging
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A basic issue tracker styled as a hybrid of GitHub and BitBucket issues.
You may attach commits to an existing ticket or you can push a single
commit to create a *proposal* ticket.
Tickets keep track of patchsets (one or more commits) and allow patchset
rewriting (rebase, amend, squash) by detecing the non-fast-forward
update and assigning a new patchset number to the new commits.
Ticket tracker
--------------
The ticket tracker stores tickets as an append-only journal of changes.
The journals are deserialized and a ticket is built by applying the
journal entries. Tickets are indexed using Apache Lucene and all
queries and searches are executed against this Lucene index.
There is one trade-off to this persistence design: user attributions are
non-relational.
What does that mean? Each journal entry stores the username of the
author. If the username changes in the user service, the journal entry
will not reflect that change because the values are hard-coded.
Here are a few reasons/justifications for this design choice:
1. commit identifications (author, committer, tagger) are non-relational
2. maintains the KISS principle
3. your favorite text editor can still be your administration tool
Persistence Choices
-------------------
**FileTicketService**: stores journals on the filesystem
**BranchTicketService**: stores journals on an orphan branch
**RedisTicketService**: stores journals in a Redis key-value datastore
It should be relatively straight-forward to develop other backends
(MongoDB, etc) as long as the journal design is preserved.
Pushing Commits
---------------
Each push to a ticket is identified as a patchset revision. A patchset
revision may add commits to the patchset (fast-forward) OR a patchset
revision may rewrite history (rebase, squash, rebase+squash, or amend).
Patchset authors should not be afraid to polish, revise, and rewrite
their code before merging into the proposed branch.
Gitblit will create one ref for each patchset. These refs are updated
for fast-forward pushes or created for rewrites. They are formatted as
`refs/tickets/{shard}/{id}/{patchset}`. The *shard* is the last two
digits of the id. If the id < 10, prefix a 0. The *shard* is always
two digits long. The shard's purpose is to ensure Gitblit doesn't
exceed any filesystem directory limits for file creation.
**Creating a Proposal Ticket**
You may create a new change proposal ticket just by pushing a **single
commit** to `refs/for/{branch}` where branch is the proposed integration
branch OR `refs/for/new` or `refs/for/default` which both will use the
default repository branch.
git push origin HEAD:refs/for/new
**Updating a Patchset**
The safe way to update an existing patchset is to push to the patchset
ref.
git push origin HEAD:refs/heads/ticket/{id}
This ensures you do not accidentally create a new patchset in the event
that the patchset was updated after you last pulled.
The not-so-safe way to update an existing patchset is to push using the
magic ref.
git push origin HEAD:refs/for/{id}
This push ref will update an exisitng patchset OR create a new patchset
if the update is non-fast-forward.
**Rebasing, Squashing, Amending**
Gitblit makes rebasing, squashing, and amending patchsets easy.
Normally, pushing a non-fast-forward update would require rewind (RW+)
repository permissions. Gitblit provides a magic ref which will allow
ticket participants to rewrite a ticket patchset as long as the ticket
is open.
git push origin HEAD:refs/for/{id}
Pushing changes to this ref allows the patchset authors to rebase,
squash, or amend the patchset commits without requiring client-side use
of the *--force* flag on push AND without requiring RW+ permission to
the repository. Since each patchset is tracked with a ref it is easy to
recover from accidental non-fast-forward updates.
Features
--------
- Ticket tracker with status changes and responsible assignments
- Patchset revision scoring mechanism
- Update/Rewrite patchset handling
- Close-on-push detection
- Server-side Merge button for simple merges
- Comments with Markdown syntax support
- Rich mail notifications
- Voting
- Mentions
- Watch lists
- Querying
- Searches
- Partial miletones support
- Multiple backend options
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